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    <title>Document</title>
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<body>
    <div class="wrap">
        <h1>Tab1</h1>
        <div class="tab1">
            <span class="title">
                <span>标题1</span>
                <span>标题2</span>
                <span>标题3</span>
                <span>标题4</span>
            </span>
            <div class="content">
                <div>内容1</div>
                <div>内容2</div>
                <div>内容3</div>
                <div>内容4</div>
            </div>
        </div>

        <h1>Tab2</h1>
        <div class="tab2">
            <span class="title">
                <span>标题1</span>
                <span>标题2</span>
                <span>标题3</span>
                <span>标题4</span>
            </span>
            <div class="content">
                <div>内容1</div>
                <div>内容2</div>
                <div>内容3</div>
                <div>内容4</div>
            </div>
        </div>

        <h1>Tab3</h1>
        <div class="tab3">
            <span class="title">
                <span>标题1</span>
                <span>标题2</span>
                <span>标题3</span>
                <span>标题4</span>
            </span>
        </div>


        <h1>Tab4</h1>
        <div class="tab4">
            <span class="title">
                <span>标题1</span>
                <span>标题2</span>
                <span>标题3</span>
                <span>标题4</span>
            </span>
            <i class="underLine"></i>
            <div class="content">
                <div>内容1</div>
                <div>内容2</div>
                <div>内容3</div>
                <div>内容4</div>
            </div>
        </div>
    </div>
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